Soft abrasive flow machining for structural surfaces of moulds

JI Shiming， ZHAO Linghan， TAN Dapeng， YUAN Qiaoling， LI Chen
（Key Lab of E&M， Ministry of Education & Zhejiang Province，
Zhejiang University of Technology, Hangzhou 310014， China）

Abstract：In allusion to the problem of difficult precise finishing for structural surface in course of mould manufacturing， a new notool precision machining method based on soft abrasive flow （SAF） was proposed. It allocated restrained component near to surface machined， constituted restrained abrasive flow passage， and used the turbulence of SAF in restrained passage to realize micro cutting for passage wall.SAF technical principles， SAF fluid dynamic characteristics， micro machining mechanism and the results of machining experiments were introduced ， the SAF material cutting effects model and the corresponding empirical equation of surface roughness and technical parameters were brought forward.
Key words：mould; structural surface; soft abrasive flow （SAF）; finishing machining